Collision groups with tables

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#1

What will be the best way to include a table of parts with a collision group because I have parts that get cloned and I want them to be cancollide but they fall through parts if they are. (they are not anchored).

#2

You can run through the table with an ipairs loop to change their CollisionGroupId property.

for i,v in ipairs(table) do
    v.CollisionGroupId = --Insert Collision Group ID here.
end
#3

I tried this but it didn’t work. The part kept falling through the map and i have checked to see if the group is correct and the default value is selected. I’m not sure what the problem.

#4

Try using the SetPartCollisionGroup() function of the PhysicsService.

-- I will assume the 'parts' is a pre-defined variable including all parts you
-- want to change the CollisionGroup of.
for i, part in pairs(parts) do
    PhysicsService:SetPartCollisionGroup(part, "CollisionGroupName")
end
#5

This still doesn’t fix it, it still goes through the baseplate.

#6

I would suggest getting the Collision Group Edtior if you don’t have it. It’s perfect for debugging collision groups. I personally use it a lot.

#7

Also, are you sure CanCollide of the parts is set to true?

#8

image

#9

Try using the Collision Group Editor to check if the parts have the correct collision group and that the collisions with other collision groups are correctly set.

#10

image im not sure what is wrong

#11

Do you want ItemGroup to collide with the Default collision group?

#12

i don’t want itemgroup to fall through the map. Im new to this stuff

#13

If that’s the case, it should work fine.

#14

my system:
press f on a cube to pick it up and rightclick to drop it. When it drops then it should do the thing but it doesn’t.

#15

The game is private so I am unable to join.

#16

sorry my bad, i thought i made it public. It is now. its not a pretty ui layout but this is to get it to work

1 Like
#17

Can you send the part of the code that actually drops the item?

#18 
DropItem.OnServerInvoke = function(player, itemName)
	local Inventory = player.Inventory
	local item = Inventory:FindFirstChild(itemName)
	if item then
		if item.Value > 0 then
			item.Value = item.Value - 1
			local itemClone = items:FindFirstChild(itemName):Clone()
			print(itemTable)
			table.insert(itemTable, itemClone)
			for i, part in pairs(itemTable) do
				PhysicsService:SetPartCollisionGroup(part, "ItemGroup")
			end
			itemClone.Anchored = false
			itemClone.CanCollide = false
			local itemNotCloneName = items:FindFirstChild(itemClone.Name)
			print(itemNotCloneName)
			itemClone.CFrame = player.Character.HumanoidRootPart.CFrame + player.Character.HumanoidRootPart.CFrame.LookVector * 4
			itemClone.Parent = game.Workspace
			return true
		else
			return false
		end
	end
end ```
#19

Ah, I saw the error already. Remove this line:

itemClone.CanCollide = false
#20

i just noticed that now. that was there before i decided to try and use cancollide stuff.